Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Mark S Sullivan, MD

Individual provider Family Medicine Physician · NPI 1871673723

Dr. Mark S Sullivan, MD is a Family Practice in Fairfield, California. Graduated from Albert Einstein College of Medicine of Yeshiva University in 1988, 38 years ago. Practices with Sutter Valley Medical Foundation, a 2,464-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
38
Trained at
Albert Einstein College of Medicine of Yeshiva University
Licensed in
CA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1234 Empire St
Fairfield, CA 94533-5711
Phone: (707) 426-3911
Fax: (707) 436-2511
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence A49206 (CA)

Record details

NPI number1871673723
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 16, 2006
Last updated in NPPESJuly 28, 2015
Mailing address10470 Old Placerville Rd, Suite 100, Sacramento, CA 95827-2539

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyFAMILY PRACTICE
Medical schoolALBERT EINSTEIN COLLEGE OF MEDICINE OF YESHIVA UNIVERSITY
Graduated 1988 (38 years in practice)
Group practice Sutter Valley Medical Foundation — 2464 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations5 on file with Medicare

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